Influence of clay minerals on sorption of bacteriolytic enzymes |
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Authors: | Guno Haskå |
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Institution: | 1. Department of Microbial Ecology, University of Lund, Helgonav?gen 5, S-22362, Lund, Sweden
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Abstract: | Myxobacteria presumably produce extracellular bacteriolytic enzymes when they are growing in soil. In order to study their
ecological significance, adsorption experiments were performed with lytic enzymes produced byMyxococcus virescens in casitone media. Different soils as well as montmorillonite and kaolinite can rapidly adsorb the bacteriolytic but not
the proteolytic enzymes. About 1 gm of montmorillonite per liter of cell-free culture solution is enough for the adsorption
of 97% of the bacteriolytic enzymes. The adsorption per unit weight is about 100 times greater on montmorillonite than on
kaolinite. About 40% of the adsorbed enzymes can be eluted with solutions of high pH or high ionic strength. The only desorbed
bacteriolytic enzyme is the alanyl-∈-N-lysine endopeptidase. |
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